[PATCH 5.15 168/317] drm/ttm: add ttm_resource_fini v2

From: Sasha Levin
Date: Mon Mar 25 2024 - 04:23:42 EST

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From: Christian König <christian.koenig@xxxxxxx>

[ Upstream commit de3688e469b08be958914674e8b01cb0cea42388 ]

Make sure we call the common cleanup function in all
implementations of the resource manager.

v2: fix missing case in i915, rudimentary kerneldoc, should be
filled in more when we add more functionality

Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220124122514.1832-2-christian.koenig@xxxxxxx
Stable-dep-of: 89709105a609 ("drm/vmwgfx: fix a memleak in vmw_gmrid_man_get_node")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 2 ++
.../gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 2 ++
drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 2 ++
drivers/gpu/drm/nouveau/nouveau_mem.c | 3 ++-
drivers/gpu/drm/nouveau/nouveau_mem.h | 3 ++-
drivers/gpu/drm/nouveau/nouveau_ttm.c | 9 ++++----
drivers/gpu/drm/ttm/ttm_range_manager.c | 2 ++
drivers/gpu/drm/ttm/ttm_resource.c | 23 +++++++++++++++++++
drivers/gpu/drm/ttm/ttm_sys_manager.c | 1 +
drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c | 2 ++
.../gpu/drm/vmwgfx/vmwgfx_system_manager.c | 1 +
include/drm/ttm/ttm_resource.h | 3 +++
13 files changed, 48 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index 675a72ef305da..ea5470c8c9212 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -169,6 +169,7 @@ static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man,
return 0;

err_free:
+ ttm_resource_fini(man, &node->base.base);
kfree(node);

err_out:
@@ -200,6 +201,7 @@ static void amdgpu_gtt_mgr_del(struct ttm_resource_manager *man,
if (!(res->placement & TTM_PL_FLAG_TEMPORARY))
atomic64_sub(res->num_pages, &mgr->used);

+ ttm_resource_fini(man, res);
kfree(node);
}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
index d02c8637f909f..ffddec08e931f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
@@ -95,6 +95,7 @@ static void amdgpu_preempt_mgr_del(struct ttm_resource_manager *man,
struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);

atomic64_sub(res->num_pages, &mgr->used);
+ ttm_resource_fini(man, res);
kfree(res);
}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index 7b2b0980ec412..55d68408951d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -476,6 +476,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
while (i--)
drm_mm_remove_node(&node->mm_nodes[i]);
spin_unlock(&mgr->lock);
+ ttm_resource_fini(man, &node->base);
kvfree(node);

error_sub:
@@ -515,6 +516,7 @@ static void amdgpu_vram_mgr_del(struct ttm_resource_manager *man,
atomic64_sub(usage, &mgr->usage);
atomic64_sub(vis_usage, &mgr->vis_usage);

+ ttm_resource_fini(man, res);
kvfree(node);
}

diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
index 6877362f6b85f..5740087f9ce93 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -109,6 +109,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
i915_buddy_free_list(mm, &bman_res->blocks);
mutex_unlock(&bman->lock);
err_free_res:
+ ttm_resource_fini(man, &bman_res->base);
kfree(bman_res);
return err;
}
@@ -123,6 +124,7 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man,
i915_buddy_free_list(&bman->mm, &bman_res->blocks);
mutex_unlock(&bman->lock);

+ ttm_resource_fini(man, res);
kfree(bman_res);
}

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 2ca3207c13fcd..2e517cdc24c9c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -162,11 +162,12 @@ nouveau_mem_vram(struct ttm_resource *reg, bool contig, u8 page)
}

void
-nouveau_mem_del(struct ttm_resource *reg)
+nouveau_mem_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
{
struct nouveau_mem *mem = nouveau_mem(reg);

nouveau_mem_fini(mem);
+ ttm_resource_fini(man, reg);
kfree(mem);
}

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.h b/drivers/gpu/drm/nouveau/nouveau_mem.h
index 2c01166a90f25..325551eba5cd4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.h
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.h
@@ -23,7 +23,8 @@ nouveau_mem(struct ttm_resource *reg)

int nouveau_mem_new(struct nouveau_cli *, u8 kind, u8 comp,
struct ttm_resource **);
-void nouveau_mem_del(struct ttm_resource *);
+void nouveau_mem_del(struct ttm_resource_manager *man,
+ struct ttm_resource *);
int nouveau_mem_vram(struct ttm_resource *, bool contig, u8 page);
int nouveau_mem_host(struct ttm_resource *, struct ttm_tt *);
void nouveau_mem_fini(struct nouveau_mem *);
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 2ca9d9a9e5d5e..91ef33f8f22cb 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -36,9 +36,10 @@
#include <core/tegra.h>

static void
-nouveau_manager_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
+nouveau_manager_del(struct ttm_resource_manager *man,
+ struct ttm_resource *reg)
{
- nouveau_mem_del(reg);
+ nouveau_mem_del(man, reg);
}

static int
@@ -62,7 +63,7 @@ nouveau_vram_manager_new(struct ttm_resource_manager *man,

ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
if (ret) {
- nouveau_mem_del(*res);
+ nouveau_mem_del(man, *res);
return ret;
}

@@ -118,7 +119,7 @@ nv04_gart_manager_new(struct ttm_resource_manager *man,
ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
(long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
if (ret) {
- nouveau_mem_del(*res);
+ nouveau_mem_del(man, *res);
return ret;
}

diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c
index f4b08a8705b32..69962b5769c54 100644
--- a/drivers/gpu/drm/ttm/ttm_range_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_range_manager.c
@@ -89,6 +89,7 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man,
spin_unlock(&rman->lock);

if (unlikely(ret)) {
+ ttm_resource_fini(man, *res);
kfree(node);
return ret;
}
@@ -108,6 +109,7 @@ static void ttm_range_man_free(struct ttm_resource_manager *man,
drm_mm_remove_node(&node->mm_nodes[0]);
spin_unlock(&rman->lock);

+ ttm_resource_fini(man, res);
kfree(node);
}

diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c
index 2431717376e70..2c590b4c46cb7 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -29,6 +29,14 @@
#include <drm/ttm/ttm_resource.h>
#include <drm/ttm/ttm_bo_driver.h>

+/**
+ * ttm_resource_init - resource object constructure
+ * @bo: buffer object this resources is allocated for
+ * @place: placement of the resource
+ * @res: the resource object to inistilize
+ *
+ * Initialize a new resource object. Counterpart of &ttm_resource_fini.
+ */
void ttm_resource_init(struct ttm_buffer_object *bo,
const struct ttm_place *place,
struct ttm_resource *res)
@@ -44,6 +52,21 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
}
EXPORT_SYMBOL(ttm_resource_init);

+/**
+ * ttm_resource_fini - resource destructor
+ * @man: the resource manager this resource belongs to
+ * @res: the resource to clean up
+ *
+ * Should be used by resource manager backends to clean up the TTM resource
+ * objects before freeing the underlying structure. Counterpart of
+ * &ttm_resource_init
+ */
+void ttm_resource_fini(struct ttm_resource_manager *man,
+ struct ttm_resource *res)
+{
+}
+EXPORT_SYMBOL(ttm_resource_fini);
+
int ttm_resource_alloc(struct ttm_buffer_object *bo,
const struct ttm_place *place,
struct ttm_resource **res_ptr)
diff --git a/drivers/gpu/drm/ttm/ttm_sys_manager.c b/drivers/gpu/drm/ttm/ttm_sys_manager.c
index 63aca52f75e12..135394dcca95a 100644
--- a/drivers/gpu/drm/ttm/ttm_sys_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_sys_manager.c
@@ -23,6 +23,7 @@ static int ttm_sys_man_alloc(struct ttm_resource_manager *man,
static void ttm_sys_man_free(struct ttm_resource_manager *man,
struct ttm_resource *res)
{
+ ttm_resource_fini(man, res);
kfree(res);
}

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
index b2c4af331c9d5..bfd686bb8d194 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
@@ -116,6 +116,7 @@ static int vmw_gmrid_man_get_node(struct ttm_resource_manager *man,
gman->used_gmr_pages -= (*res)->num_pages;
spin_unlock(&gman->lock);
ida_free(&gman->gmr_ida, id);
+ ttm_resource_fini(man, *res);
kfree(*res);
return -ENOSPC;
}
@@ -129,6 +130,7 @@ static void vmw_gmrid_man_put_node(struct ttm_resource_manager *man,
spin_lock(&gman->lock);
gman->used_gmr_pages -= res->num_pages;
spin_unlock(&gman->lock);
+ ttm_resource_fini(man, res);
kfree(res);
}

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
index b0005b03a6174..a64188c7268d5 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
@@ -49,6 +49,7 @@ static int vmw_sys_man_alloc(struct ttm_resource_manager *man,
static void vmw_sys_man_free(struct ttm_resource_manager *man,
struct ttm_resource *res)
{
+ ttm_resource_fini(man, res);
kfree(res);
}

diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
index 140b6b9a8bbe6..dd6929f0c4f6d 100644
--- a/include/drm/ttm/ttm_resource.h
+++ b/include/drm/ttm/ttm_resource.h
@@ -262,6 +262,9 @@ ttm_resource_manager_cleanup(struct ttm_resource_manager *man)
void ttm_resource_init(struct ttm_buffer_object *bo,
const struct ttm_place *place,
struct ttm_resource *res);
+void ttm_resource_fini(struct ttm_resource_manager *man,
+ struct ttm_resource *res);
+
int ttm_resource_alloc(struct ttm_buffer_object *bo,
const struct ttm_place *place,
struct ttm_resource **res);
--
2.43.0

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